25041222001 has 2 divisors, whose sum is σ = 25041222002. Its totient is φ = 25041222000.

The previous prime is 25041221987. The next prime is 25041222023. The reversal of 25041222001 is 10022214052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24724417600 + 316804401 = 157240^2 + 17799^2 .

It is a cyclic number.

It is not a de Polignac number, because 25041222001 - 2⁹ = 25041221489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25041222001.

It is not a weakly prime, because it can be changed into another prime (25041228001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12520611000 + 12520611001.

It is an arithmetic number, because the mean of its divisors is an integer number (12520611001).

Almost surely, 2^25041222001 is an apocalyptic number.

It is an amenable number.

25041222001 is a deficient number, since it is larger than the sum of its proper divisors (1).

25041222001 is an equidigital number, since it uses as much as digits as its factorization.

25041222001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 25041222001 its reverse (10022214052), we get a palindrome (35063436053).

The spelling of 25041222001 in words is "twenty-five billion, forty-one million, two hundred twenty-two thousand, one".